401708384 has 72 divisors (see below), whose sum is σ = 993548304. Its totient is φ = 156499200.

The previous prime is 401708383. The next prime is 401708387. The reversal of 401708384 is 483807104.

It is a happy number.

It is a super-2 number, since 2×401708384² = 322739251551782912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401708383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19694 + ... + 34514.

It is an arithmetic number, because the mean of its divisors is an integer number (13799282).

Almost surely, 2^401708384 is an apocalyptic number.

401708384 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401708384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496774152).

401708384 is an abundant number, since it is smaller than the sum of its proper divisors (591839920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401708384 is a wasteful number, since it uses less digits than its factorization.

401708384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14860 (or 14841 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 401708384 is about 20042.6640943763. The cubic root of 401708384 is about 737.8537666552.

The spelling of 401708384 in words is "four hundred one million, seven hundred eight thousand, three hundred eighty-four".